I have recently come into a 12inch round sub enclosed pioneer will fit with box inside the trunk of a mini cooper... I also have a 12inch CVR Kicker sub with a vented box much louder with amp and cables that will not fit in the trunk without modification of the car seat hooks that poke out of the back of the rear seat. I also have have some misc. speakers if you are interested in purchasing these i can mail them on good faith...please email if your interested hayworthzach@gmail.com